Mina Rezaie, Author at ArvanCloud

ArvanCloud Blog

Read more about ArvanCloud news,
updates, products and services in ArvanCloud weblog.

9 Nov 2019
Reading time 7 Minutes

SPF Record and Its Settings in User Panel of ArvanCould

Sender Policy Framework (SPF) is a security measure that is used against Email Spoofing attacks, as well as making sure that the emails are delivered to their recipient without spamming issues. Email Spoofing is an attack when the attacker uses a domain for sending forged messages to the recipients.  SPF Record…

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9 Nov 2019
Reading time 6 Minutes

Investigating ERR_SPDY_PROTOCOL_ERROR

You might encounter ERR_SPDY_PROTOCOL_ERROR while viewing a web page using Chrome browser. This might even happen while visiting popular websites. In this document we will discuss this error and ways to fix it. SPDY Protocol and its functionality ERR_SPDY_PROTOCOL_ERROR is related to SPDY protocol. Google has introduced this protocol to address…

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6 Nov 2019
Reading time 4 Minutes

DKIM record and its settings in User Panel of ArvanCloud

DomainKeys Identified Mail (DKIM) is a standard for email authentication supported by companies such as Google, Yahoo, etc. The purpose of this standard is to authenticate emails using Public Key Infrastructure (PKI). DKIM performs this authentication by adding a digital signature to the header of email. Difference of DKIM and SPF…

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5 Nov 2019
Reading time 1 Minutes

Why the free certificate of ArvanCloud lasts for 90 days?

ArvanCloud issues the certificates with the help of Let’s Encrypt company. The policy of Let’s Encrypt for 90 days certificates are as follows: If a short term certificate is stolen or incorrectly issued, it won’t be valid for a long time and will cause less damage. In other words, this policy…

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5 Nov 2019
Reading time 3 Minutes

SRV record

A SRV record specifies a host that supports a specific service. Simply put, if a user (application) send a request to access a specific service to the DNS server, in response it will receive a SRV record that contains the domain name and port number on which the service is running. …

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5 Nov 2019
Reading time 2 Minutes

Changing the proxy settings of page rules

You can use proxy settings to add or remove some headers to the requests. In order to do this, go to Content Delivery Network (CDN). On the page rules panel, click on the edit icon in front of the rule that you want to modify. In the opened window, go to…

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5 Nov 2019
Reading time 2 Minutes

Why in GTmetrix website the score associated with Use a CDN is low for my website, although I am using CDN service of Arvan Cloud?

This is a question that occurs to many of our users in ArvanCloud. Although they are using the CDN service of ArvanCloud, when they use GTmetrix to analyze the performance of their website, the Use a Content Delivery Network (CDN) option in YSlow tab has not got any points. The answer…

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27 Oct 2019
Reading time 3 Minutes

The difference between push and pull data storage methods in CDN edge servers

The task of a Content Delivery Network (CDN) is to deliver content to the users in the shortest possible time and as fast as possible. CDNs usually use two methods for data storage and content delivery to the end users: Pull and Push. Push In push method a copy of all…

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27 Oct 2019
Reading time 2 Minutes

Adding the IP addresses of Arvan Cloud to the whitelist of iptables

An important step toward preventing disruption and delay in the connection between Arvan edge servers and the main host server is to mark the IP addresses of Arvan Cloud as whitelisted in the firewall settings of the host server. It means that the firewall must be configured to recognize a list…

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27 Oct 2019
Reading time 4 Minutes

What is the meaning of Time to Live (TTL) in DNS records?

Time to Live (TTL) indicates the time period that a recursive resolver can keep a DNS record in cache. This parameter has a direct effect on response time of DNS records, because when a recursive resolver has a DNS record in its cache, a complete DNS lookup is no longer required….

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